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J. E.BRUN-NER. CONCRETE FORM FOR HIPPED- ROOFS. APPLICATION FILED FEB. 2a. 1916.-

1,303,2-51-. Patented May13, 1919.

3 SHEETS-SHEET I'- Guam- J. E.-BRUNNER. CONCRETEFORM FOR HIPPED ROOFS. APPLICATION'FILED FEB. 23. 19:6.

Patented May 13, 1919.

3 SHEETS-SHEET 2- my NORRIS PI: YER: 20,, (more-1.11110. Wash/M1070. u. c.

J. E. BRUNNER. CONCRETE FORM FOR HIPPED ROOFS.

APPLICATION FILED FEB. 28, l9| 6- Patented May 13, 1919.

L T E E H A S O 00 w 7 3 n O UNITED STATES PATENT orricn JOSEPH E. BBUNNER, or LEOPOLIS, WISCONSIN.

' CONCRETE FORM FOR HIPPED ROOFS.

may be easily handled, and assembled with great facility to form a series of rings hav ing different lnclinations, but superposed "and adequately braced to support the concrete in the form of a hipped roof having a bell shaped cap, an outer mold wall being employed for the steeper portions of the roof. Also to provide a set of mold units which may be assembled with those above mentioned in a manner to provide dormer windows in the roof cap at one or more levels. i

In the drawings- Figure l is an elevation, part in vertical section, of a roof cap form embodying my invention.

Fig. 2 is an elevation, part in vertical section, of one of the dormer window forms, and also showing a portion of the completed concrete wall in vertical section within the mold. a

Fig. 3 is a side elevation of one of the dormer window forms.

Fig. 1 is a plan view of one of the upper window forms showing a portion of the middle wall form associated therewith.

Fig. 5 is a front view of the same.

Fig. 6- isv a side viewof the same window for i Like parts are identified by the same reference characters throughout the several views.

A cornice ring includes a vertical band 1 and a horizontal band 2secured together by an angle iron band 3. The lower margin of the base band 1 is reinforced by an angle iron band 4, and the ring or band 2 is reinforced by a second band 6, having ears 7 depending therefrom at intervals. Angular braces, composed of rods 8 and9, connected by turn buckle couplings 10, are secured to the ears 7 and connect these with similar Specification of Letters Patent.

ears 11 on the angle iron ring 1. The turn buckles provide means for adjusting the braces to support the band 2 in a true horizontal position. Another angle iron ring 15 is secured to the outer margin of the band 2 and. serves as a footing for the outer wall of the roof form.

The cornice ring is secured to the top of the vertical wall A of the silo or other building, on the outer side thereof, and on the inner side I provide a footing ring for the inner roof form, which comprises a band 16 having angle iron rings 17 and 18 at the top and bottom respectively, with their horizontal flanges projecting inwardly.

The outer roof form comprises two belts of tapered plates 20 and 21. respectively associated with the dormer window-forms, as hereinafter described, and supported by the cornice ring. Eachplate has its lower portion curved outwardly as shown, and its lower margin rests upon the band 2 within-the ring 15. The sides of each plate are provided with connecting members 23, preferably composed of angle iron, and similar connecting members 2 1 are employedat the upper margins, which are adapted to engage corresponding connecting members 26, secured to the lower margins of the plates 21 composing the upper belt. The upper belt plates are provided with side connecting members or angle iron strips 28, similar to the members 23, and preferably registering therewith when the forms are assembled. The connecting members servealso as supporting posts and reinforcing members, and are so arranged as to lap together with those on adjacent plates when the plates are assembled. They are secured together by bolts 29 which pass through holes in the respective members.

The. inner form comprises three belts of tapered plates 30, 31 and-32 respectively. But these plates are all straight and flat, except the lower marginal portions 32 of plates 32, and the plates 30 and 31 are substantially parallel with the plates 21 and spaced from the plates 20and 21 a distance equal to the thickness ofthe wall or roof. The upper set of plates projects above the outer wall of the mold, and each plate is angularly bent or elbowed along its lower margin, so that when the lower marginal portion 35 is in alinement with the plate 31 below it, the upper portion or body of the plate 32 will extend inwardly at a Patented May '13, 1919.

Application filed February 28', 1916. Serial No. 80,769.

r g i 1,303,251

along the side margins and also have angle iron foot members 88. Their lower portions have T-shaped reinforcing bars 39.

'The plates and 31 have each margin provided with angle iron connecting members 40.- and: also a series of U-bar segments 12', which are bolted or otherwise detachably secured to the plates at intervals.

A cupola form is supported from the upper margin of the belt formed by the plates 32;. This cupola form comprises inner and outer rings 13 and 44 respectively, the inner 'r-ing being adapted to register withthe upper margins of the plates 32 and the: outer ring being supported therefrom by-a set of 'crossed wires 45 and 16 which extend through holes in the respective rings. Dormer'window formsillustrated in Figs. 2 and 3, are designed to cap a chute at the side ofthe silo, such chutesordinarily comprising semi-cylindrical or rectangular projections at the side of the silo Wall A. In Figs. 1' and 2, the outer wall of the chute is indicated at A. The dormer window forms include outer and inner base member plates 5O and '51 respectively. The plates are supported by a frame formed ofbottom and top bars 52 and 58 respectively, these bars being connected by vertical strips 54:. Thebars and strips may all be formed of angle iron and the extremities of the bars- 522 and 53 are outwardly curved and adapted to be connected With-the bands 1 and 2 by bolts 29-to form outwardly projecting por tions of said bands, adaptedto extend around the chute. The: inner plates 51 have marginal bars 56-and 57, which form a frame, the inner-end of which is connected with the inner mold wall by bolts 29. The side plates 60 and 61 of the window forms, are mounted upon thebars 53 and 56, and have footing bars 63 of angle iron secured to the supporting bars 53, 56, by bolts 29. The outer side plate 60 is capped by a reinforced' elbowed extension 67, which forms a lintel extension supported by curved braces 7 0 and extensible braces 77 and 78,

and cooperating with a top plate 71 in a position to support the concrete lintel beam 72. Each of the side plates 61 and base plates 51 extends inwardly across the space between the plates 20 and 30, and the plates 61 have an angular inner margin 68 provided withholes, whereby'it may be bolted to angular frame" bars 69 on the abutting inner wall plates30. Theuouter side plates 60 also have curved reinforcing bars 75 conforming to the contour of the plates 20 and provided with bolt holes, whereby they may be. connected with the abutting connecting members '23, carried by the adjacent plate 20. One or more of the forward reinforcing bars 77 may be formed with extensible sections 78', slotted and bolted to the bars 77 at 79, whereby the front portion of the top of the form may be raised or lowered to support the lintel or cap-stone 72 in proper position.

It will be understood that the space between the inner form plates 61 and the cap plate 71 constitutes the Window opening in the completed structure, the concrete being filled in on top of the-chute wall? between the plates 50, 51-,and 60,61, andalso above the cap plate 71' toform the lintel slab or cap stone 72, all as clearly shown in Fig. 2.

Referring now to Figs. 4:, 5 and 6, which show the upper dormer window construction, it will be observedtha-t the window opening is determined by aset of triangular side plates 80, suitably reinforced on. their inner faces, and a capiplate 92, these forming the inner walls of the form. At their outer margins, the side plates 80 are flanked by outwardly extendingplates 85 connected with the plates 80 and: withcorresponding triangular plates 86 which constitute the ,outer wall of thewindow frame form. The inner margin of the plate 86 connects with a plate 87 which constitutes air extension. oh the belt of roof plates 21. All of these plates areprovided with marginal angle iron connectingmembers, as. above described, with reference to the plates 2O and221. The i'nner form plates 31 have their margins connected. at 89 with the connecting members-90ml; the inner margins on plates 80.

The cap plate 92, which cooperates with extension members 93 and 9st to formv the lintel? or cap. stone, are similar in form to those described with-reference-to the dormer window at the topof the chute and more specific description is thereforeideemed unnecessary.

From the foregoing description, it Willi be understood that the dormer window form which caps thechute, constitutes a part of the belt formed by the plates-20, While the window form last described; constitutes a part of the belt of plates 21. Thislastiinentioned window may beused as-afilling opening, while the chute cap opening not only affords light and ventilation to the chute, but also aflords access to theinterior of: the silo. Owing to the fact that all of the plates are provided With marginal connecting members or angle iron bars suitably apertured to receive connecting bolts 29, it is obvious that the variousbelts may be easily and conveniently assembled in tlie described positions and securedtogether by the bolts. By employing comparatively narrow plates 20, I am enabled to outwardly curve their lower portions, thereby providing the concrete roof with a bell shaped base to form projecting eaves, as clearly shown at the left hand in Fig. 1. In order to avoid the difficulty which would otherwise occur in thus contouring the lower portions of the plates 20 and still preserve the circular form of the belt, I make the plates 20 narrow and employ a correspondingly large number of them, whereas plates 21 and also the inner form plates 30 and 31 may be made much wider, since these plates are simply segments of a cone. I also attach great importance to the set of extensible braces, composed of the rods 8 and 9, connected by turn buckles 10, since I am thereby enabled to adjust the overhanging ledge or eaves to a true horizontal position.

1. A mold for conically hipped concrete roofs, including the combination with an inner mold wall of an outer wall provided with an annular base having both vertical and horizontally disposed rings, a set of upwardly and inwardly curved tapering plates, each provided with connecting members adapted to be secured to the base and each having outwardly projecting connecting flanges along its side and top margins, a super-posed set of fiat tapering plates provided with connecting members, whereby said plates may be secured together to form a belt and may also be secured to the lower set of plates to provide an outer mold wall having the form of a truncated cone with a bell shaped bottom portion, and a set of extensible braces connecting the lower and outer margins of the vertical and horizontal base rings respectively, whereby the horizontal ring may be adjusted and supported from the vertical one in a true horizontal posi- 2. A mold for conically hipped concrete five cents each, Washington, D. 0.

roofs, including the combination with an outer mold wall formed in sections and provided with a bell shaped base portion, of an inner mold wall formed in sections and comcally tapered, and a superposed inner mold wall also conically tapered and having a greater inclination from a vertical line and terminating in a central tubular extension together with supporting base rings for said mold walls, the outer base ring being provided with a horizontal member adapted to support the bell shaped extension of the lower belt of mold plates, and means for adjustably supporting the horizontal member, whereby the same may beheld in a true horizontal plane.

3. A mold for conically hipped concrete roofs, including the combination with an outer mold wall formed in sections and provided with a bell shaped base portion, of an inner mold wall formed in sections and conically tapered, and a superposed inner mold wall also conically tapered and having a greater inclination from a vertical line and terminating in a central tubular extension, together with supporting base rings for said mold walls, the outer base ring being provided with an adjustable horizontal member adapted to support the bell shaped extension of the lower belt of mold plates, and means for vertically adjusting the outer margin of said horizontal member, whereby the latter may be supported in a true horizontal position under the weight of the concrete filling.

In testimony whereof I afiix my in the presence of two witnesses.

JOSEPH E. BRUNNER.

signature Witnesses WM. BEsoHKn, LAURA RESGHKE.

by addressing the "Commissioner of Patents, 

